16847820157 has 4 divisors (see below), whose sum is σ = 19254651616. Its totient is φ = 14440988700.

The previous prime is 16847820133. The next prime is 16847820169. The reversal of 16847820157 is 75102874861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75102874861 = 7 ⋅10728982123.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16847820157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16847820157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16847820257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1203415719 + ... + 1203415732.

It is an arithmetic number, because the mean of its divisors is an integer number (4813662904).

Almost surely, 2^16847820157 is an apocalyptic number.

It is an amenable number.

16847820157 is a deficient number, since it is larger than the sum of its proper divisors (2406831459).

16847820157 is an equidigital number, since it uses as much as digits as its factorization.

16847820157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406831458.

The product of its (nonzero) digits is 752640, while the sum is 49.

The spelling of 16847820157 in words is "sixteen billion, eight hundred forty-seven million, eight hundred twenty thousand, one hundred fifty-seven".